Carpet cleaning machine



FIG. 1 is a front perspective view of a carpet cleaning machine showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a side elevation view thereof. 

The ornamental design for a carpet cleaning machine, substantially as shown. 